Question

If a = 1, b = -2, C = -1, show that 7a + b + c = 2abc​

Answer 1

Step-by-step explanation:

7×1 + (-2) + (-1) = 2×1×(-2)×(-1)

7-2-1=2×2

7-3=4

4=4

Hence Proved

Answer 2

Answer:

4

Step-by-step explanation:

a=1,b=-2,c=-1

According to the question,

L.H.S =

(7×1)+ -2+ -1

=7-2-1

=4

R.H.S=

2×1×-2×-1

=4

Hence L.H.S=R.H.S(Proved).